When palaeoanthropologist Donald Johanson discovered a bone ... ultimately resulting in a 40 per cent complete skeleton. Johanson’s find became known as Lucy – named after the Beatles song ...

SIMON: Paleoanthropologist Donald Johanson, founding director of the Institute of Human Origins at Arizona State University and the man who found Lucy. Thank you so much for speaking with us.

NPR's Scott Simon speaks with paleoanthropologist, Donald Johanson, about the 50th anniversary of his biggest discovery, Lucy, an early human ancestor. KUOW is Seattle’s NPR news station.